A Geometric Distortion Resilient Image Watermark Algorithm Based on DFT-SVD
Yang Yong-tian · Jisuanji gongcheng · 2006
The algorithm resilient geometric distortion is an important research direction in copyright protection. This paper proposes an image watermark algorithm based on discrete Fourier transform (DFT) and singular value decomposition (SVD) because of the good property of DFT amplitude matrix and the characteristic of SVD that it is stabilization to geometric distortion such as rotation, scale and translation. Experimental results show that the algorithm has more embedding capacity and robust to common attacks and geometric distortion.